Mounting bracket for semaphore signal devices



.March 10, 1953 w. cARLsoN MOUNTING BRACKET FOR SEMAPHORE SIGNAL DEVICESFiled May 24, 1949 Lou/Is 4). Car/ (Ittorneg Patented Mar. 10, 1953MOUNTING BRACKET FOR SEMAPHORE SIGNAL DEVICES Louis W. Carlson, SanFernando, Calif., assignor to Monarch Bracket Company,

Riverside,

Application May 24, 1949, Serial N 0. 94,966

7 Claims.

This invention relates to a mounting bracket, particularly one for usein supporting a semaphore signal device upon the drivers cab of a truck,and has for its objects the provision of a simple and inexpensive yetruggedly constructed bracket which will establish a rigid mounting basefor the signal device, which takes purchase from the truck cab throughthe instrumentality of two complementing bearing members, and which isso engineered as to admit of the bearing members being easily andquickly fitted to substantially any surface curvature of which thedrivers cab partakes.

Other more particular objects and advantages will, with the foregoing,appear and be understood in the course of the following description andclaims, the invention consisting in the novel construction and in theadaptation and combination of parts hereinafter described and claimed.

In the accompanying drawing:

Figure 1 is an elevational view showing the now-preferred embodiment ofthe invention installed upon the drivers cab of a truck, and with dottedlines being employed to fragmentarily illustrate the truck and also toportray a semaphore signal device carried by the bracket, the vantagepoint from which the ilustrated parts are viewed being to the rear ofthe cab.

Figs. 2 and 3 are vertical sectional views, each transverse as respectsthe bracket, taken to an enlarged scale on the lines 22 and 3-3,respectively, of Fig. 1.

Referring to said drawing, the numeral 5 denotes a stock-piece made bypreference from a fairly long section of metal tubing, and rigidlysecured as a permanent attachment to an end of this stock-piece is afitting 6 arranged and adapted to serve as a mounting base for asemaphore signal device which I indicate generally by the letter S. Suchfitting is here shown as comprising a plate 1 made integral with acenterbored hub 8 which is threaded upon the stock, and having the hubpartially split and presenting apertured ears 9 accommodating a clampingbolt [0 to immovably fix the fitting upon the stock. In lieu of thisconstruction, the fitting could, if desired, be welded to the stock andthus made an integrated part of the same. The end to which the fittingis applied is, in the use of the bracket, the outer end and will behereinafter so termed.

The opposite or inner end of the stock-piece is received within thecylindrical bore of a block H Other than for the fact that the bodyproper of this block is split and is clam ed rigidly upon thestock-piece by a cap screw I2, the same is made much in the form of aplain or pedestal bearing and has each of its oppositely directed lugs I3 apertured for the reception of securing bolts M. It is acharacteristic of this block that the footing surface I5 is concave inend elevation.

As a complement to this end block, the present bracket provides a secondfooting member I6 which is arranged to occupy a position more or lesscentral to the length of the stock-piece. This member is triangular inplan configuration and presents at each of its three corners a dependingbearing foot, as ll, 18 and I 9, and the underside or bearing faces ofthese feet each slant inwardly and upwardly toward a common center.Otherwise and more particularly stated, the three feet present much theappearance of ungular posts and are placed to occur one at each vertexof an imagined spherical triangle with the bearing faces so made asgenerally to conform to the surface contour of the latter. Between theseprojecting feet, the footing member is substantially relieved throughoutthe areal extent of it underside. The several feet are each verticallyapertured for the reception of a respective mounting screw 20, and eachsaid aperture desirably tapers from a narrow opening at the top to awide opening at the bottom, thus to give flexibility to the mounting inthe sense that the screws, in their application, need not be placedco-aXial to the feet but rather may be disposed on radii ofsubstantially any sphere imagined within a Wide range of diameters andhence assures to the footing member a firm mounting on the crowned sideof a truck cab irrespective of the sundry compound curves which may beemployed in the make-up thereof. The said footing member presents abifurcated extension projecting angularly upwardly from an end thereof,and the furcate arms 2l--22 which this extension provides occur assubstantial prolongations of two surface ribs which reinforce themember. The end extremities of such furcate arms are each bossed andpierced by co-axial apertures, one of which is tapped, and a cap-screw23 received through the smooth-bored aperture and Working in the tappedopening operates to establish clamping pressure upon the introduced ears2425 of a clamping collar 26 applied to the stock-piece.

It is thought that the invention will have been clearly understood fromthe foregoing detailed description of the now preferred embodiment of myinvention, taken in conjunction with an inspection of Fig. 1 wherein Ihave shown the bracket applied to the cab C of a truck in theperformance of its intended end of supporting the semaphore signal, Thefact of the two footing members being each adjustable both rotatably andendwise upon the stock-piece, taken in conjunction With the particularcurvatures to which the bearing face of each said footing piecepartakes, and the added ability to adjust thefooting memberIifi'aboutthe. .center of the cap-screw 2 3 as a swivel axis, permits the bracketto adapt itself to substantially any shape of cab. bracket isparticularly designed for use witha semaphore signal device ofthe:typeicQ trolledeby force of vacuum created within the engine-cylineders, the supply pipes therefor and which]: denote by P in Fig. 1leading to the signalgdevicethrough the hollow center of the stockpiece. Little'ingenuity would, however, be required in order to 4 feetlocated one at each of the three corners of the triangular base.

4. A mounting member adapted to be secured in footing engagement uponthe rounding shoulder of a truck cab and comprising a mounting basepresenting three pendant feet each pierced with a bolt-holeandfcharacterized in that the feet are ungular in shape and placed tooccur one at each vertex of an imagined spherical triangle with theslope of the bearing faces conforming to e surface contour of thelatter.

--5,'. A s a mounting member adapted to be secured uponthe roundingshoulder of a truck cab a; andus'edjas the footing support for anaccessoryadapt the stock-piece to the receptionofmechan ical controls.

may be resorted to without departing from the spirit of the invention,and it isthereforerny intention that no limitations be implied and thatthe hereto annexed claims be given a scope fully commensurate with thebroadest hiterpretationto which the employed language-fairly admits.

What I- claim is:

1. In a mounting bracket for a semaphore'sig nal device, and incombination with a tubular stock-piece presenting means at" the oute rend thereof for attaching the signal device toithe stock-piece; twomounting members arrangedito foot upon the exterior surface'of truck caband each 1eleasabl3'"clainped to the stock-"piece toadmit of thesamebeing adjusted both rotatably and en'dwise 'of the stock-piecabne of;said members being adapted to occupy'a'posit ion at' th'einner end ofthe stock piece and having its footing surface arched to generallycon'form to the curving back of the cab and the other said membersheillg adapted-to occupy a position intermediate, the length of thestock-piece and havingjit footing surface vaulted to generally conform.to the rounding shoulder of the cab.

2. The mounting bracket of claim l which the mounting memberwhi ch liesatthe inner end of thestock-piece is made in the form of a pedestalbearing. 7 p

3. The'mounting bracket of claim 1 in which the mountingmember whichlies intermediate the length is the stockpieceprovidesafiooting basewhich is made triangularin.plan configuraf tion and derives footingsupport from pendant carrying' standard-a mounting base of triangularplan configuration having a bifurcated extension projecting vangularlyupwardly from an end thereof, a split collar adapted to fit the standardand presenting opposing jaws which extend laterally as prolongations ofthe collar and fit between the fur-cats arms of'said bifurcatede'xtension, and a shacklebolt-carried by said furcate arms forexertingclamping pressure upon the in trcduced jaws to draw the collar tightupon the standard, the base having {three pendant feet each pierced witha bolt hole and characterized in that thesame are ungular in shape andplaced to occur one at each corner of the base-with the slope of thebearing faces conforming to the surface contour of an imagined sphericaltriangle.

6. The mounting member of claim 5 in which the bolt-holes which piercethe pendant feet taper from a narrow opening at the top to a Wideopening at thebottom. Y p

, 7; The mounting member of claim 5, said shackle bolt lyingtransverse'to the longitudinal median line of the base and permittingswivel adjustment of the latter relative tothe collar;- LOUIS'WlCARLSON.

REFERENCES CITED The following references are ofrecord inthe file ofthis patent: I H V UNITED STATES PATENTS Number; Name. I Date 2,3883625rWagenknecht Nov. 6-, 1945 2,440, i09 Lehmann Apr. 27, 1948 a roar-ironPATEN S ,o v

Nuinber Country- Date 49274 France Nov. 12, 1938

